Automatic grease-cup.



W. L. STINE.

AUTOMATIC GREASE CUP.

APPLICATION men NOV. 7, 1912.

1,142,283. Patented June 8, 1915.

lllllllml 6 auum wo'c WZMZWLL- Iii/2e Wilma/9M0 THE NORRIS PETERS 30.,PHOTC-LITHQ. WASHINGTON. D. C.

s'm'rns WALTER L. STINE, or NILES, CALIFORNIA.

AUTOMATIC GREASE-CUP.

feeding element adapted to be moved in opposite directions to feed thelubricant by reason of the to and fro movement of the machine part towhich the lubricant cup is attached.

By reason of my improved construction the necessity for adjusting theusual cap of the cup, downwardly therein, to force out the lubricant, isentirely avoided.

Further objects and advantages of the invention will be more fullydescribed inconnection with the accompanying drawing and will be moreparticularly pointed out in and by the appended claims.

1 In the drawing :'Figure 1 illustrates the device of my inventionapplied to the con- .necting rod of a crank. Fig. 2 is a longitudinalsectional view of my improved lubricant cup.

Like characters of reference designate similar. parts throughout thedifferent figures of the drawing.

As illustrated, a connecting rod 1 is attached to the crank pin 2 of arevoluble crank 3' and my improved grease cup 4 is attached to a strap 5and is adapted to supply lubricant to the bearing 6 and pin 2. Rotationof the crank imparts sudden reverse movements to the cup 4:, to withdrawthe plunger wholly out of said passage 6, to admit the lubricant to flowtherein, and to project the plunger into and through said passage topositively discharge the lubricant therefrom.

The cup 4 is hollow so as to contain a suitable supply of lubricant andthe lower internal portion of the cup 4 is preferably inclined orconical, as indicated by 5, and terminates in a discharge passage 6. Thedischarge passage 6 is provided with a shoulder 7 near its lowerdischarge end 8. The exterior of the cup is reduced to provide a stemwhich is threaded, as indicated at 9, and which may be provided with aSpecification of Letters Patent.

Patented June 8, 1915.

Application filed November 7, 1912. Serial No. 730,037.

polygonal nut 10 by means of which the cup may be threaded or turnedhome in the strap 5 and bearing 6. The top of the cup 4 is open and maybe provided with a cap or closure 11 and the latter is provided with aguiding portion in the form of a sleeve 12.

.A plunger 13, which performs the function of a feeder, is slidablymounted in the guiding sleeve 12 and closely fits the discharge passage6. The is of suflicient length to guide the feeder 13 throughout itstravel and the shoulder 7 conveniently forms a stop limiting movement ofthe feeder in one direction.

The operation is as follows :When a to and fro movement, which in thepresent specific embodiment is an up and down iding sleeve 12 movement,is imparted to the lubricant cup 7 4, by rotation of the crank 3, then,an up and down movement is imparted to the feeder 13 and the lubricantis forced downwardly through the passage 6. The feeder 13, which may bein the form of a solid rod, is of sufficient weight to acquireconsiderable momentum so that a positive feed action will be obtained.Upon downward movement of the crank 3 the feeder rod 13 will be moveddownwardly into the passage 6 and by reason of'the fact that the passage6 is of a predetermined size, it will be understood that the feeder 13will, at each stroke, feed a selected quantity of lubricant. The upstroke of the part due to upward movement of the crank will retract thefeeder 13 into the position shown in Fig. 2. It will also be understoodthat during co-movement of the crank, or other parts which may actuatethe feeder, no appreciable amount of the lubricant will be fed. When thecrank or other parts attain sufiicient speed to impart a to and fromovement to the feeder then the feed of the lubricant will be initiatedand maintained and such feed will not be dependent upon the quantity oflubricant in the cup, so long as there is a sufficient quan-' tity tomaintain a level above the passage 6. It will also be understood thatthefeed of the lubricant increases and decreases in accordance with thespeed of the crank 3 by reason of the fact that during a relative slowrotation the feeder 13 will not be actuated with the same force andtherefore will not drive out as much lubricant from the cup as would bethe case if the crank 3 a discharge chamber: opening directly-out ofthe, lower end; of said: tapered portion, the walls of"; said" dischargechamberintersecting the tapering, walls of said. first mentioned chamberand the connection between said chambers being entirely uninterrupted;said plunger being arranged? to reciprocate in said last. mentionedvchamber and to; lift en;

,tirely out ofsai'd last mentioned chamben at:

one end: of its-stroke; i

2. grease cup. COII1p1'1S1Ilg'1I1, GOIIlblIliLb tion, a casing, a capfor saidcasing, a guide rigidwith said cap, and a plunger adaptedWitnesses-h MARQARM MaoLnem. H W. STALEY.

ranialath nat tmay eohtain etqr fiwesmt ch, by addressee tirf-qemmifiaimen' iEsteem w ahinzfi mll Q1:

